PetSafe Freedom Aluminum Pet Door for Dogs and Cats, White, Tinted Vinyl Flap SOLID ALUMINUM FRAME - perfect for heavy use or multiple pet homes PROTECT AGAINST WEATHER AND DRAFTS - magnetic flap closure, pile weather stripping and slide-in closing panel TINTED, VINYL FLAP - flexible flap is designed for your pet's comfort and ease of use EASY INSTALLATION - includes detailed instructions, cutting template and installation hardware DESIGNED FOR MEDIUM PETS OVER 40 LB. - flap opening is 8 1/4" W x 12 1/4" H.Locking Cover Material: ABS Plastic INTERIOR OR EXTERIOR INSTALLATION - fits people doors between 3/8" and 2" thick Call, chat or email with our expert US-based customer care specialists six days a week; They are waiting to assist you and your pet with your product needs PetSafe Brand has been an industry leading US manufacturer of pet behavior, containment and lifestyle products since 1991, helping millions of people and pets each year